I rode a century ride last weekend. Was using the iBike as well as a Garmin. I expected a difference in the climbing numbers, but this is dramatic. Garmin says 6297, while the iBike says 11,481. I think the actual elevation was closer to 7k per the event flyer. The weather was pretty consistent, but I was out there for 5.5 hours. Little warmer at the end of the ride +/- 20 degrees.
Thoughts.
Climbing numbers?
Re: Climbing numbers?
Here's the file
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- Elephant Rock 100.csv
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Re: Climbing numbers?
Just by eyeballing your elevation profile I can see about 10,000 feet of cumulative elevation gain. The other gains are undoubtedly small rollers that I did not even attempt to count.
The elevation profiles obtained independently from your accelerometer and your baro sensor are very close to each other, so your indicated elevation profile is correct.
GPS is notoriously imprecise for elevation readings. Here in Florida, which is flat (but like all "flat" roads has undulations) on an 8 mile test ride I did yesterday my iBike said I did 134 feet of vertical climbing, caused primarily by those undulations. My GPS said zero cumulative elevation. It did not even "see" the 40 foot bridge I crossed twice.
The elevation profiles obtained independently from your accelerometer and your baro sensor are very close to each other, so your indicated elevation profile is correct.
GPS is notoriously imprecise for elevation readings. Here in Florida, which is flat (but like all "flat" roads has undulations) on an 8 mile test ride I did yesterday my iBike said I did 134 feet of vertical climbing, caused primarily by those undulations. My GPS said zero cumulative elevation. It did not even "see" the 40 foot bridge I crossed twice.
John Hamann
Re: Climbing numbers?
When I had an edge 305, I could setup the % of climb that the computer would accumulate. For example, only accumulate ramps over 2%, all the rest below 2% was not considered elevation gain. iBike accumulates all.